# OI Solutions vs iNaturalist

The clearest difference is rating: OI Solutions at 5.0 against iNaturalist's 4.1. OI Solutions also leads on iOS requirement (13.0 vs 15.1). iNaturalist's advantage is update cadence (fortnightly vs every 51 months) and ratings volume (714 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OI Solutions holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: iNaturalist has 714 ratings behind it against 1, so its average is the more settled of the two.

OI Solutions ships an update every 51 months, iNaturalist fortnightly. The most recent releases landed on October 7, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | OI Solutions | iNaturalist |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oi-solutions/id1367953288/reviews)** | [4.1 (714 ratings)](https://appshunter.io/ios/app/inaturalist/id6475737561/reviews) |
| Number of ratings | 1 | **714** |
| Positive reviews | — | 48.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Fortnightly** |
| Monetization | Free | Free |
| Best chart rank | — | **#97** |
| Size | 5 MB | 220 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Abintegro](https://appshunter.io/developer/1278333681) | [iNaturalist](https://appshunter.io/developer/421397031) |

## What reviewers say

### OI Solutions

[App page](https://appshunter.io/ios/app/oi-solutions/id1367953288)

Access career development tools and e-learning resources on the go. Prepare for interviews, build your resume, and search for jobs with expert advice. Syncs with your existing account for seamless career management.

**Highlights:** Career assessments, Interview simulator, Resume builder, Job search engine, Global recruiter database, Expert career advice, E-learning courses

**In-app purchases:** none


### iNaturalist

[App page](https://appshunter.io/ios/app/inaturalist/id6475737561)

**Currently charting:** #97 Top Free · Education (US App Store)

Identify plants, animals, and fungi using your camera or imported photos. Get AI-powered species suggestions and connect with a global community of nature enthusiasts to learn more about the natural world and contribute to scientific conservation efforts.

**Highlights:** AI species identification, Record species observations, Contribute to scientific data, Explore biodiversity, Connect with nature enthusiasts

**In-app purchases:** none

**What reviewers like**

- 🚀 Faster and more intuitive UI
- 👍 Improved features from website
- 💡 Batch upload and sorting options
- 🚀 Responsive and smooth performance
- 👍 Easier to navigate and use

**What reviewers complain about**

- 🐛 Bugs with observation time and location
- 🔍 Difficulty finding advanced editing options
- 🔍 Overly complex UI for basic tasks
- 🔍 Removal of useful features like map view
- 🔍 Too much reliance on AI identification

**Reported bugs**

- App freezes when suggesting IDs on audio clips
- Inconsistent tap responsiveness in search menu
- Observation time not accurately filling based on upload time
- Map showing incorrect observation locations
- Crashes and performance issues on some devices

**Requested features**

- Ability to type in address/coordinates for location
- Option to add observations to projects during upload
- Batch editing/uploading of observations
- More precise search filters (e.g. aquatic, parasitic, migratory)
- Bring back colored observation markers on map


## Frequently asked questions

### Is OI Solutions free?

OI Solutions is free to download, with no in-app purchases.

### Is iNaturalist free?

iNaturalist is free to download, with no in-app purchases.

### Which has better reviews, OI Solutions or iNaturalist?

OI Solutions is rated higher. OI Solutions averages 5.0 out of 5 from 1 ratings, while iNaturalist averages 4.1 from 714 ratings.

### Do OI Solutions or iNaturalist have ads?

Neither OI Solutions nor iNaturalist shows ads.

### Which is updated more often, OI Solutions or iNaturalist?

OI Solutions ships an update every 51 months, and iNaturalist fortnightly. Most recently, OI Solutions was updated on October 7, 2026 and iNaturalist on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*